body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background-color: white;
    padding: 2em;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 400px;
    text-align: center;
}

h1 {
    font-size: 1.5em;
    margin-bottom: 1em;
}

.form-group {
    margin-bottom: 1em;
    text-align: left;
}

label {
    display: block;
    margin-bottom: 0.5em;
}

input[type="text"],
input[type="email"],
input[type="password"] {
    width: calc(100% - 20px);
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

input[type="checkbox"] {
    margin-right: 0.5em;
}

button {
    width: 100%;
    padding: 10px;
    background-color: #000;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1em;
}

button:hover {
    background-color: #333;
}

p {
    margin-top: 1em;
}

a {
    color: #000;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

*{
    margin: 0px;
    padding: 0px;
}
video{
    position: fixed;
    right: 0px;
    bottom: 0px;
    min-width: 100%;
    min-height: 100%;
    height: auto;
    width: auto;
    /*加滤镜*/
    /*filter: blur(15px); //背景模糊设置 */
    /*-webkit-filter: grayscale(100%);*/
    /*filter:grayscale(100%); //背景灰度设置*/
    z-index:-11
}
source{
    min-width: 100%;
    min-height: 100%;
    height: auto;
    width: auto;
}
.login-box{
    background: url('../img/background.jpg') no-repeat center center fixed;
    background-size: cover;
    padding: 2em;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 400px;
    text-align: center;
}

.aaa{
    color: #ffffff;
}